Use an ARMv$8$ simulator for more help!!

Code $1$:

ADDI X$1,$ XZR$,\backslash$#$10$

ADDI X$2,$ XZR$,\backslash$#$20$

SUB X$3,$ X$1,$ X$2$

CBZ X$3,$ TARGET

Code $2$:

ADDI X$1,$ XZR$,\backslash$#$10$

ADDI X$2,$ XZR$,\backslash$#$10$

SUB X$3,$ X$1,$ X$2$

CBZ X$3,$ TARGET

answer the following question: How does Code $1$ differ from Code $2$ in terms of execution? $($Hint: Follow the "Zero" control output signal of ALU, the "AND" gate, $"$OR$"$ gate, and control signal of the upper right "MUX"$)$